Janeth was last seen on March 2, 1997 at her condominium, which is located in the 12000 block of Alton Square in Herndon, Virginia. The weather was cold and rainy the day she disappeared. She was reported missing the following day when her daughter failed to find her at her residence. There was no sign of a struggle. Janeth's car was still parked in the garage and all of her belongings were left behind.

Janeth was living with her daughter, Lisa Rowe, at the time of her disappearance. Lisa and her boyfriend have been named as persons of interest in Janeth's disappearance. They maintain their innocence in Janeth's case and Lisa stated she believed her mother had left of her own accord. Janeth's mother and sister, however, believe she is deceased.

Janeth was laid off from her job at Mobil eight months prior to her disappearance and took a job at a consulting company afterwards. Authorities have not ruled out foul play in her disappearance, but they have not named any suspects in her case either. Her case remains unsolved.